FBReader supports synchronization of your library and/or reading positions with the FBReader book network ( https://books.fbreader.org/ ), a Google Drive™ based cloud service. Synchronization is disabled by default; to enable and configure it, use the preferences dialog.

FBReader is fast and highly customizable – it can use external TrueType/OpenType fonts and custom backgrounds, the screen brightness can be adjusted while reading (slide finger up/down along the left screen edge), and different day/night color schemes can be selected.

This reader also includes a browser/downloader to access different network ebook catalogs and stores. Several popular English, French, Russian, Chinese, and Polish libraries are included. Custom OPDS catalogs are supported too.